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Dr Ania Zylbersztejn
  • Research Associate
  • ICH Pop, Policy & Practice Prog
  • UCL GOS Institute of Child Health
  • Faculty of Pop Health Sciences
I completed a PhD in epidemiology at UCL Great Ormond Street Institute of Child Health and the Farr Institute of Health Informatics Research, in collaboration with the Centre for Health Equity Studies at Stockholm University. I used routinely collected health records to develop national birth cohorts in England and in Sweden, to determine why child mortality is nearly two times higher in England than in Sweden. Prior to the PhD, I studied MORSE at University of Warwick and I hold MSc in Medical Statistics from University of Leicester. My current research focuses on infections due to respiratory syncytial virus (RSV) in young children.
Research Summary
My current research focuses on respiratory syncytial virus (RSV) infections in children. I am working on the first community serosurvey of RSV in the UK to identify risk factors associated with RSV infection at young age using Born in Bradford study. I also use routinely collected health records (hospital records linked to prescribing data) to explore patterns of prescribing of palivizumab, a passive immunotherapy available to infants at high risk of severe infection, in English hospitals.

I am also interested in international comparisons of child health outcomes. In my PhD, I compared under-5 mortality in England and Sweden to determine the contribution of birth characteristics and socio-economic factors to the increased mortality in England relative to Sweden. I developed national birth cohorts using individual-level data from administrative linked datasets. I found that the excess child mortality in England relative to Sweden was primarily explained by differences in the distribution of birth characteristics (such as preterm birth, low birth weight or presence of congenital anomalies) between the two countries. This means that preventive health strategies to reduce child deaths in England should focus on improving maternal health before and during pregnancy. I also explored intercountry differences in mortality due to potentially preventable causes and I was involved in a project comparing coding of congenital anomalies in hospital records in England and Scotland.
Academic Background
2018 PhD Doctor of Philosophy – Epidemiology University College London
2014 MSc Master of Science – Medical Statistics University of Leicester
2013 BSc and MSc Bachelor of Science and Master of Science – Mathematics, Statistics and Operational Research University of Warwick
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